Sleeping bag



Aug. 28, 1934. E. H. wALLlN 1,971,469 j i SLEEPING BAG Filed Nv. 12. 1932 Ems Hamm mama lnuvmT-m E5 www@ Patented Aug. 228, 1934 SLEEPING BAG Emst Harald Wallin, Anika, sweden, asignar to Gais-Marie Wallin, Arvika, Sweden Application Nvember 12, 1932, serial No. 642,392 v In Sweden March 4; 1932 This invention relates to a sleepingbag made of felt or like material and to a method of making such a bag'. The sleeping bag,r Which is meant to be-used also as a rug or plaid especially during travel by motor cars, is characterized substantially thereby that at the open end of the bag there is a flap provided with suitable connecting devicesand so shaped as to be fastened together and form a hood enclosing the shoulders, the l0 neck and the head of the person lying in the bag, the said ilap being located inside the bag when `being used as a plaid, the open end of the bag being adapted to be closed by means of closing devices located at the said end.

Figures 1 to 4 of the accompanying drawing illustrate three embodiments of the bag according to the present invention. Figure 1 shows one embodiment of the bag in plan view, the hood being located inside the bag. Figure 2 shows a second embodiment of the bag, also in plan View, the hood being, however, fastened together.

Figure3 shows a section taken on line III- HI of Figure 2.

, Figure 4 shows a corresponding section of the bag according to the third embodiment.

Figures 5 to 'l show diagrammatically the method of making the sleeping bag.

In the embodiment shown in Figure 1, the sides ofthe bag 1 and the flap 2 attached at the open end thereofconsist of a single felt-like layer. In the embodiment shown in Figures 1 and 2 the said ap is provided partly with a number of buttons 3, 4 and button-holes 5, and at the front end with two substantially semicircularrecesses 6. A number of button-holes -7 is located at the open end of the bag. When'the bag is to be used as a sleeping bag the person 'in the bag Iastens the ilap 2 by putting -his arms throughv the openingsv 40 located on the upper side of the bag winch openings may be closed'from the inside by means of flaps. 'I'he buttons 3 of the flap being introduced into the button-holes 5y and the buttons 4 being introduced into the button-holes 7. As shown in Figure 2, a hood is thus obtained which encloses the shoulders, the nckand the head of the person lying in .the bag. The face, which ot course should not be covered, willbe located in the oval opening formed by the recesses 6.

To prevent draught completely, the nap 2, in addition to the recesses 6, is provided with a wedge-shaped recess 9 extending inwardly from the middle portion of the endyedge of the ilap, the edges of said recess being adapted Ato be pulled 66 together by means of a tightening device 10 so that, as can be seen in Figure 2, the nap forms a cap tightlyenclosing the head of the person lying in the bag.

When the bag is to be used as a plaid, the flap 2 is first spread out a's. shown in dash-and-dot lines in Figure 1. The nap is then folded in such a way lthat it will be located inside the bag 1 as shown` in Figure 1- in dotted lines. The openV end of the bag is thenjclosed by introducing buttons 11, located on the back of the nap, into the .button-holes '1.

The whole or only part of the circumference of the bag described above (the said bag being preferably round-woven) may consist of two or more layers, which` form one or more compartments, which extend around the whole circumference of the bag or along part of it only, and may be continuous or divided into cells. Figure 3 shows a section of a bag Provided with compartments 12 extending around the bag and Figure 4'shows a section of a bag'ihaving compartments 12 extending only alongrone side of the bag. In both of the said embodiments the space between the double walls of the bag is divided into cells.

Bags of the above construction are especially i adapted for use in sanatoriums, but may also be advantageously used for military purposes.

f The method of making the fabric iorv above mentioned bag being applicable also when making other fabrics, as has been mentioned above, the general application of the process is shown in Figures 5 to 'l of the accompanying drawing.

When making a sleeping bag of the character described, it is important to not only produce the bag portion but also a nap attached thereto which forms the hood. Here it is of the greatest importance that the application of the said flap does not cause great costs of manufacture or loss 01' material. To avoid those disadvantages the bag is cut from a round-woven web of material in such a manner that an integral nap is obtained. It is known to make bags from a round-woven tubular web of material, the upper and lower layers or which-.are connected with each other at desired points, preferably by means of weaving,

knitting or sewing, in order to form bag bottoms.

Bag openings are formed at a desired point between two adjacent points of connection by cutting the tubular web along a transverse line. In

the method contemplated by the present invention, the same round-woven tubular web of ma- `terial is used.- In the present invention, however,

the tubular web is not simply cu* into two bag portions, but each side of the web is cut transversely with respectA to the longitudinal axis thereof along lines spaced apart from each other. Thereafter, two longitudinal cuts are made connecting the ends of the transverse incisions, so that the tubular web separates into two parts. At the open end of each bag so formed, an integral ap is obtained which may then be shaped so as v to form a hood.

The method is illustrated diagrammatically in Figures 5, 6 and 7, Figure 5 showing the web of material in plan view. Figure 6 shows a section taken on line VI--VI of Figure 5, and Figure 7 shows a section taken on line VII- VII of Figure 5.

In the drawing, a1` and a2 indicate a roundwoven tubular web of material, the upper and lower layer of the said web of material being connected with each other at e preferably by means of weaving, knitting or sewing in order to form the bag bottoms. According to the process of this invention the upper and lower layer is cut along chosen lines` f1, f2, in such a manner that the cut f1 in the upper layer al will be located at some distance from the cut f2 in the lower layer a2. The cuts f1, f2 are united by means of two longitudinal cuts g made in the side edges of the web of material. th open end of each bag. -The said ap is then cui'l out in such a manner that the same will form the hood shown in Figures 1 and 2.

Several different embodiments and modications of the sleeping bag and of the method of its production may be made without departing from the spirit of this invention.

Having now described my invention, what I claim as new and desire to secure by Letters Patent is:

1. As a new article of manufacture, a convertible sleeping bag open at one end and comprising at the open end a projecting even flap forming a continuation of oneside of the bag, fastening means on the top end of the second side of the bag, the sides and the base of said flap, said Thereby a flap h isobtained at fastening means on the bag and the sides of the ap being fastened together by folding over the corners of the said flap so that both sides of the ap lie parallel with the top edge of the second side of the bag, whereby the fastening means are brought together and a triangular shaped hood is created forming an integral part of the bag, whereas said bag, when the ap is folded over and tucked inside thereof, forms a permanent blanket upon closing the fastening means on the bag and the base of the flap.

2. A bag, as claimed in claim 1, in which said ap throughout its length is of equal Width with that of 'a side of the bag, and in which said flap is provided with curved recesses at the front end thereof, said recesses, in folded position of the ap, forming a window opening in the said hood.

3. A bag, as claimed in claim 1, comprising a nap provided at the front end thereof with two substantially semi-circular spaced recesses, and a third recess provided between said two recesses, and closing means associated with said third recess for closing the same and tightening the hood formed by the folded flap.

4. The method of making a sleeping bag of the character described, which comprises the steps of producing a tubular web, attaching the sides thereof at spaced intervals to form compartments, each thereof being substantially twice the length of the bag ultimately desired, transversely cutting each side of the compartment a distance equal to the width of one side thereof and along lines spaced apart from each other, thereafter cutting the compartment longitudinally thereof between each two ends of the said transversal incision lines, whereby the compartment separates into two parts, each thereof consisting of a bag open at one end and provided with a flap, thereafter shaping the flap, andproviding fastening means on the bag substantially as described.

' ERNST HARALD WALLIN.

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